This clever self-mill engine revolves around turning a humble mana dork into an infinite looping machine. By utilizing Biomancer's Familiar, the activation cost of Voltaic Construct's untap ability is discounted from two mana down to just one, allowing it to precisely match the single colorless mana produced by Millikin. You simply tap Millikin to dump the top card of your library into your graveyard for mana, pay that exact mana to have Voltaic Construct untap it, and repeat the process endlessly to mill your entire deck.